Counter-strike have also cvar for this.
Code:
"mp_humanteam" = "any"
FCVAR_GAMEDLL FCVAR_REPLICATED - Restricts human players to a single team {any, CT, T}
And many others
https://github.com/ambaca/Bacardi-Du...2020-03-27.txt
Look configs you not have set that cvar anywhere and reboot server.
You can check cvar value by typing only cvar name.